TI_PRE_COUNT
OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
lw \reg, TI_PRE_COUNT($28)
sw \reg, TI_PRE_COUNT($28)
lw \reg, TI_PRE_COUNT($28)
sw \reg, TI_PRE_COUNT($28)
OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
DEFINE(TI_PRE_COUNT, offsetof(struct task_struct, thread_info.preempt_count));
DEFINE(TI_PRE_COUNT, offsetof(struct thread_info, preempt_count));
TI_PRE_COUNT != offsetof(struct thread_info,
OFFSET(TI_PRE_COUNT, thread_info, preempt_count);